Mop-wringer



F. R. WULTER.

IVIOP WRiNGEH.

APPL'lc/mow msn MAY21, 191s.

Panted N 0V. 30, 1920 2 SHEETS-SHEET 21 FERDINAND R. WOLTR, OF MINNEAPOLIS7 MINNESOTA.

Mor-W'RINGER.

Application led May 21, 1918.

To all who/m, t may concern Be it known that I, FERDINAND R. WOL- Yrmi, a citizen of the United States, residing at Minneapolis. in the couiity of Hennepin and State of ldinnesota, have invented certain new and useful Improvements in Mop- Vfvringcrs; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved so-called mop wringer, and to such ends, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and deined in the claims.

The salient novelty of the invention is i'ound in improved means for adj ustably and yieldingly pressing the one roller against the other, but the invention involves certain other highly important though minor novel features which either improve the action of the device, or facilitate the manufacture thereof.

In the accompanying drawings which illustrate the invention, like characters indicate like parts throughout the several views.

Referring` to the drawings,

Figure 1 is a plan view of the improved mop wringer;

Fig. 2 is a fragmentary section on the line 2*-2 of Fig. 1;

Fig. 3 is a fragmentary detail of certain parts found in the vicinity of the line marked 3 3 on F 1;

Fig. 4 is a vertical section taken through the device on the line 4-4 of Fig. 1, some parts being` broken away and some parts being found in full; and

Fig. is a detail with some parts in 'eleva-A tion and seine parts sectioned on the line 5 5 of Fig. 4.

The wriiiger is supported on a pail which is preferably a cylindrical sheet metal structure indi fated, as an entirety, by the numeral 6, the same havingthe customary` beaded up per edge. The lower edge orbottom of the pail is telescoped into an endless steel or iron hoop 7. This hoop is provided with a plurality of outwardly pressed tapered corrugations S that are formed with inwardly pressed lips 9, the said corrugations 8 preferably do not run completely to the upper edge of the hoop and are preferably made flaring in a downwardprec- `Specification of Letters Patent.

Patented Nov. 30, 1920.

Serial No. 235,759.'

tion, that is, are given an increasing horizontal dimension toward the lower edge of the hoop. This, while it gives the corrugations an outward Hare, rontracts the lower edge of the hoop without contracting the upper edge of the hoop. The pail is tightly pressed into the tapered hoop until its bottom strikes the stop lips 9 as shownin Fig. 5. The hoop will then be firmly held in position. At several places, preferably at diametrically opposite points, the hoop is formed with slightly outpressed portions 9a into which the upper ends of a pair of foot brackets 1() are inserted. The outer ends of these brackets 1() rest upon the licor and are adapted to be stepped on by the operator to hold the pail positively anchored to the floor when pulling` upward on the mop.

Fitted into the upper edge portion of the pall is an approximately rectangular roller .supporting frame preferably made from a flat steel bar bent to form parallel sides 11, a cross connecting portion 12 and short segmental portions 13 and 14. The segmental portions 13 and 14 fit the inner surfaces of the pail and are adapted to be rigidly but dctachably secured to the pail by short nutcquipped bolts 15. The side bars 11 of the said frame are set, preferably edgewise, while the cross portion 12 is preferably turned edgewise into a horizontal position. The numeral 16 indicates a short transverse spacing bar, the ends of which are interposed between the pail and the segmental end portions 14 and are secured by the said nuts 15.

The relatively fixed and movable rollers are indicated, respectively, by the numerals 17 and 18. rThe trunnions 17a `of the roller 17 are journaled in bearing blocks 19 while the trunnionsk 18l of the movable roller 18 are journaled in bearing blocks 20. These f bearing blocks 19 and 2O are grooved to fit the side bars 11 of the roller supporting frame. The said bearing blocks 20 are free to slide on the said bars 11 while the bearing blocks 19 are provided with dowel-like projections 21 that enga-ge perforations 22 portions upon which the end prongs 23a of the yelre-lilre operating levers 23 are piv otally mounted. 'llo permit the prongs 23 to be thus applied on the smooth portions of the said hubs 20a, said prongs are provided with notches 225", through which the outer portions of the keys 20h may freely pass when the said lever, in the act of assembling or disinounting, turned over into an ei;- treme position, to Wit, into a position about 17:3 degrees to the right from that position shown in Fig.

lifter the yoke-like operating lever is applied, as stated, an angle iron cross connecting tie bar 2s is applied thereto, as best shown in Fig. l, preferably by means of short nut-equipped bolts 24e,

To the intermediate portion of the arms of the yole-lilo lever 223, a sort of a yokelilre stirrup 25 is pivotally connected, preferably by loosely applied rivets 26. Ithese rivets, instead of being upset at their ends, are left free for application and removal and the rivets are simply held in position detachably by means of spring lim 92'. These springs are pre ybly n spring Wire, each having one end passed through a perforation in the adjacent arm of the lever 23 and clenched against the same, While the free end of said spring is inserted into the notched or slotted heads of the cooperating rivet. This maires assembling of the parts and dismounting or disconnection thereof, a very easy matter, and, moreover, is cheap coiistruction.

y-lhe so-called stirrup 25 is preferably formed integral Wit-h, or otherwise rignlly secured to a thrust bolt 28, the end of which is flattened and provided with a longitudinal slot 29. This slotted end of the thrust bolt 28 is slidably pivoted to an anchoring bracket 30 detachably secured by a short-nut-equipped bolt 3l (see lfig. 2) te the transverse bar l2 of the roller support ing frame, wllorlring slidably on the `flattened end of the thrust bolt 2&1., but hold against rotation thereon, is an externally threaded spring adjusting slcc-re 32.. the outer end head of which is spring pressed against the head of the anchoring bracket 30 and which head, it will be noted by reifen ence to Fig. l, has a flattened oblique upper edge surface 30a for an important purpose presently to be noted.

lllorlring with threaded engagement on the sleeve 32 a spring adjustingy nut 33 preferably having a knurled surface so that it may be readily turned by the hand. A strong coiled spring 34 surrounds the thrust bolt 28 and sleeve 32 and is compressed bctween the stirrup 25 and the adjusting nut 33.

The numeral 35 indicates guard ref; that extend parallel to but inward of the side bars 1l immediately below the rollers 17 and i8 and serve to prevent the mop cloth from getting caught at the end of the rollers. The ends of these guard rods are bent at an angle, passed through perferations in the segmental portions 13 and le of the roller supporting frame and are seated in small outpressed pockets 36 formed in the sides of the pail. These guard rods may, therefore, easily sprung into and out o working position.

The yole-lilre lever 23 can be or disconnected from the sleere 20 only, as before stated, it is t o degrees to the right into posi ien .sh-:mn

if in Figs. 3 and et. llore it Will be noted i this movement cannot take place as long the said lever is pivotally connected at the stirrup 25 of the plunger ci f, there is no danger of accidental disconnec tion.

rlhe plunger or thrust bolt and its stirs rup 25 act as one member of a toggle, the other member of which is aili'irdefl by the lever 23, the said two toggle members ing connected by rivet-lil1e studs 'i is operated by hand `force ap:l the projecting free end of the leer no, when the toggle set, as shown in lgs. l, and el, it will be noted. that the axis of its intermediate pivot at 26 is slightly be- 95 low the dead center and the projecting end of the lever 23 is then pressed downimrd against the rim of the pail, thereby locking the toggle and locking the two rollers, pressed the one toward the other. Gf coun-se, the spring /l makes one the toggle nu bers yielding that the rollers will adapt themselves to the mop cloth compress tween the The tension of the sp obviously, may be varied by adjustmcn the nut 33. llhon the toggle in its locned position noted, the end of the sliding sleeve 32 bears agamst the front inner surface ol' the head of the soscalled anchoring bra'. 30. lWhen the free outer end of the lc 2? is raised slightly. so as to carry the in r mediate pivot 26 of the to fle abovc its dond center, then the force of the compression on the mop cloth will gire an initial separation to the. rollers and an initial furher i lnickling movement to the toggle, but such force would not buckle the toggle beyond the point Where the pressure on the mop cloth Was raised. rfhe completion of the buckling lmovement of the toggle is produced by the action of the spring le iu pressing the head of sleeve 32 against the llattened surface 30a of the head of bracket 30, and under such action, the toggle will be buckled to its extreme position shown by dotted lines in Fig. fl and the movable roller 18 'ill be retracted, thereby to its extreme i'vosition. elso shown by said dotted line. rl'his insures Wide opening between the two wringer rollers, so that the mop cloth may izo be freely drawn downward between the same and into the water containing pail. Of course,l by compression in the toggle required to set the rollers wringing action is produced simply by forcing the free end of the leveil downward and back to its -full line position, Figs. I and 4.

The efliciency of this device has been thoroughly demonstrated in practice. It is not only eiicient in operation, but strong and durable and capable of being manufactured at reasonably .small cost, because all of the various parts are designed to be made at a minimum of cost and to be assembled with a minimum of labor.

What I claim is:

l. The combination with a pail and a roller supporting frame mounted on the rim thereof, of cooperating rollers journaled on said frame, one of which is movable toward and from the other, a toggle having a base of re-action on said frame and connected to said movable roller for operating the same, the said toggle including a spring element, and a spring tension adjusting device.

2. The combination with a pail and a roller supporting frame connected to the rim thereof, said roller support having laterally spaced parallel side bars, relatively iXed and slidable roller bearings on said sidebars, coperating wringer rollers ournaled to said fixed and movable slidable roller bearing, a yoke-like lever having prongs pivoted to said slidable bearings, a thrust bolt having a pivotal connection to the intermediate portions of the prongs of said yoke-like levei and therewith constituting a toggle, an anchor bracket on therim of the pail serving to guide said thrust bolt but permitting endwise movements thereof, and a coiled spring on said thrust bolt reacting against the same and against said anchor bracket.

3. rllhe combination with a pail and a roller supporting frame connected to the rim thereof, said roller support having laterally spaced parallel side bars, relatively fixed and slidable roller bearings on said side bars, cooperating wringer rollers journaled to said fixed and movable slidable roller bearings, a yoke-like lever having prongs pivoted to said slidable bearings, a thrust bolt pivoted to the intermediate portions of the prongs of said yoke-like lever and therewith constituting a toggle, an anchor bracket on the rim of the pail serving to guide said thrust bolt but permitting endwise movements thereof, a coiled spring on said thrust bolt reacting against the same and against said anchor bracket, means for adjusting the tension of said spring comprising a non-rotary externally threaded sleeve slidable on said thrust bolt and engageable with said anchor bracket, and an adjusting nut on said sleeve directly engaging one end of said spring, the toggle formed by said thrust bolt and lever being movable to a position slightly beyond a dead center to set the coperating rollers for wringing action.

4f. The combination with a pail, of a roller support including parallel laterally spaced bars secured to the rim of the pail, relatively fixed and slidable roller bearings applied on said side bars, relatively fixed and movable wringer rollers jonrnaled to said fixed and slidable bearings, said slidable bearings having hubs with projecting key lugs, a yokelike lever having prongs pivoted on the hubs of said slidable bearings and having lug entrance notches adapting the said prongs to be applied to or removable from said hubs when said lever is turned into a predetermined extreme posit-ion, an anchor bracket on the rim of the pail, a thrust bolt slidable through said anchor bracket and provided with a stirrup-like end pivoted to the intermediate portions of the sides of said yokelike lever, and a spring on said thrust bolt reacting against its stirrup end and against said thrust bracket, the said yoke-like lever and thrust bolt constituting a toggle for operating said movable roller.

In testimony whereof I affix my signature in presence of two witnesses.

FERDINAND R. VVOLTER. Witnesses:

CLARA DEMAREST, F. D. MERCHANT. 

